Ore separator and concentrator



(No Model.)

I. F. MONBLL. ORE SEPARATOR AND conenmmwon.

Patented Sept. 12, 1893.

W/TNESSE ATTORNEYS.

NTTED STATES PATENT OFFICE.

IRA FERRIS MONELL, OF SUGAR LOAF, COLORADO.

ORE SEPARATOR AND CONCENTRATOR.

SPECIFICATION forming part of Letters Patent No. 50 4,931, datedSeptember 12, 1893.

Application filed August 26, 1892. Serial No. 444,225. (No model.)

V To all whom it may concern.-

Be it known that I, IRA FERRIS MONELL, of

Sugar Loaf, in the county of Boulder and State of Colorado, haveinvented a new and Improved Ore Separator and Concentrator, of which thefollowing isa full, clear, and exact description.

The invention relates to ore separators and concentrators such as shownand described in the Letters Patent of the United States No. 333,322,granted to me December 29, 1885.

The object of the present invention is to provide a new and improved oreseparator and concentrator which is simple and durable in construction,very effective in operation, and arranged to conveniently adjust themechanism for bumping a depending swinging table.

The invention consists of certain parts and details and combinations ofthe same, as will be fully described hereinafter and then pointed out inthe claims. Reference is to be had to the accompanying drawings forminga part of this specification, in which similar letters of referenceindicate corresponding parts in both figures.

Figure 1 isaside elevation of the improvement with parts broken out; andFig. 2 is a transverse section of the same on the line 2-2 of Fig. 1.

The improved ore separator and concentrator is mounted on a suitablyconstructed frame A in which is mounted to swing a table B, supported onrods C depending from suit able cross beams on the top of the frame A.In the ends of the table B are mounted to turn the drums D and D, overwhich passes the endless belt or apron E, also passing over rollers Fjournaled in the side beams of the table B. The belt, after leaving thedrum D, passes downward under a driving drum G, secured on atransversely extending shaft G journaled in suitable bearings on thefront end of the frame A. On one end of the shaft G is secured a wormwheel G in mesh with a Worm H attached to a shaft H extendinglongitudinally and j ournaled in suitable bearings on one side of theframe A. On the shaft H are secured the collars H and 1-1, against whichpress the springs H and H respectively, coiled on the said shaft andabutting at their inner ends on a bracket H attached to a brace A of themain frame A.

The tension of the belt E around the table B causes the roller Gjournaled on the stationary frame to have a slight oscillating movementwhen the table B is reciprocating and this causes a pounding by the wormwheel G upon the teeth of the worm H.

The springs H H therefore allow the shaft H to yield slightly whichprevents the wheel and worm from being injured. The bracket H forms theouter bearing for the shaft H. The shaft H is connected by a pulley andbelt with the usual driving mechanism to impart a rotary motion to thesaid shaft, so that the latter, by the worm H and the worm wheel Grotates the drum shaft G and the drum G, so as to impart a travelingmotion to the belt E. The belt, afterleaving the drum G, passes over aroller I, and then over a roller 1 to the other drum D, the said rollersI and I being journaled in bearings J held adj ustably on the braces Aof the frame A, so as to give the desired tension to the belt or apronE.

On the table B is secured a pushing block K, provided on one face with'arubber cushion K, on which is adapted to press a handled nut L, screwingon the threaded part of the eccentric rodNof an eccentric N secured on atransversely extending shaft N The eccentric rod N passes looselythrough the cushion K and the block K, so that on the forward motion ofthe said eccentric-rodN the nut L ismoved against the cushion K toimpart a swinging motion to the table B in the direction of the arrow a.On the shaft N carrying the eccentric N is secured a cone pulley N (seeFig. 2,) connected bya belt N with a similar pulley N secured on atransversely-extending driving shaft N connected by suitable mechanismwith machinery for imparting a rotary motion to the said shaft N so thata continuous rotary motion is transmitted by the cone pulleys N and N.and the belt N to the shaft N A screw rod 0 is held in a cross beam Aof the frame A and extends loosely through the pushing block K, theouter threaded end of the said rod being provided with a handled nut Padapted to abut against a rubber cushion Q, similar to the cushion Kabove mentioned. The cushions K and Q are located on opposite sides ofthe block K, as will be readily understood by reference to Fig. 1, sothat on the return movement of the table B the nut P abuts on the saidrubber cushion Q, while on the forward motion, as above described, thenut L abuts and presses on the cushion K.

On the front end of the machine, next to the drum D, is arranged aconcussion block R held removably on a post A of the main frame A. Onthe face of this concussion block R is held adjustably a block S adaptedto be engaged by the projecting end of the table carrying the drum D.The adjustment is efiected by means of a bolt R passed through the blockS and upper end of post A The outer end of the bolt R is provided with anut by tightening which the block R will be compressed and the tablewill make a hard bump but by loosening the nut the table will becushioned. The machine is also provided with chutes and hoppers forpassing ore upon the belt E, and is also provided with water feedingdevices for washing the ore on the said belt.

The operation is as follows: When the table B is caused to swingforwardin the direction of the arrow a by the action of the eccentric N,as above described, then the table, when reaching the end of its outwardstroke, receives a concussion by striking the plate S on the removableconcussion block Rso that the material on the belt E is agitated. Asecond concussion on the return stroke of the table B is avoided as thetable on the return stroke follows and finally abuts and rests on thecushion K. The main object of the cushion Q is to retard or hold backthe Weight of the table so that the concussion will be as light asdesired. Itis understood that a heavy concussion is not desirable assuch concussion vibrates or shakes the mineral up into the current whichcarries it off along with the sand. By adjusting the nuts L and P theoperator can set the blocks K and Q to insure proper concussion. It willbe seen that by adjusting the nuts L and P the concussion of the table Bcan be regulated according to the nature of the material undertreatment. As shown in Fig. 2, the rollers Fare cone-shaped at theirends, so as to cause the belt to be turned up at its edges,while passingover the said rollers, to prevent lateral displacement of the materialon the belt.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent 1. An ore separator comprising a pendent freelyswinging table, having a pushing block provided with an aperture, acushion secured on the front face of the said block and provided with anaperture registering with the aperture in the block, and a threadedeccentric-rod or pitman extending freely through the apertured cushionand block and provlded with a nut to strike the cushion in the forwardthrow of the rod and swing the table, then recede from the cushion whenthe rod is retracted to again strike the cushion on the return of thetable and jar the latter and again throw it, substantially as set forth.

2. An ore separator and concentrator provided with a pendent swingingtable having a pushing block, an eccentric rod passing loosely throughthe said pushing block, a nut held adj ustably on the said eccentric rodand adapted to press a rubber cushion on the said block, and astationary screw rod passing loosely through the said pushing block andprovided at its outer end with a nut adapted to engage a cushion on theopposite side of the said pushing block, substantially as shown anddescribed.

3. In an ore separator and concentrator, the combination with a pendentswinging table and means for imparting a forward motion to the saidtable, of a fixed screw rod passing through a pushing block attached tothe said table, anut held adjustably on the said fixed screw rod, and apushing block secured on the said table and provided with a rubbercushion adapted to be engaged by the said nut on the return movement ofthe said table, substantially as shown and described.

4. Au ore separator and concentrator provided with a driving shaft forthe endless traveling belt, collars secured on the said shaft, andsprings abutting against the said collars and on a fixed bracket formingabearing for the said shaft, substantially as shown and described.

IRA FERRIS MONELL.

Witnesses:

JOHN T. OARMAcK, R. E. OAINE.

